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Reducing the Crystallite Size of Spherulites in PEO-Based Polymer Nanocomposites Mediated by Carbon Nanodots and Ag Nanoparticles. NANOMATERIALS 2019; 9:nano9060874. [PMID: 31181863 PMCID: PMC6630485 DOI: 10.3390/nano9060874] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 05/31/2019] [Accepted: 06/04/2019] [Indexed: 11/17/2022]
Abstract
The PEO-based polymer nanocomposites were prepared by solution cast method. Green approaches were used for synthesis of carbon nanodots (CNDs) and silver nanoparticles (Ag NPs). It was found that the crystallite size of spherulites of PEO was greatly scarified upon incorporation of CNDs and Ag NPs. In the present work, in opposition to other studies, broadening of surface plasmon resonance (SPR) peak of metallic Ag NPs in PEO-based polymer composites was observed rather than peak tuning. Various techniques, such as powder X-ray diffraction (XRD), SEM, UV-Vis spectroscopy, and photoluminescence (PL), were used to characterize the structural, morphological, and optical properties of the samples. Increase of amorphous phase for the PEO doped with CND particles was shown from the results of XRD analyses. Upon the addition of suspended Ag NPs to the PEO:CNDs composites, significant change of XRD peak position was seen. A field-emission scanning electron microscope (FESEM) was used to investigate the surface morphology of the samples. In the SEM, a significant change in the crystalline structure was seen. The size of PEO spherulites in the PEO nanocomposite samples became smaller and the percentage of amorphous portion became larger, owing to the distribution of CNDs and Ag NPs. The UV-Vis absorption spectra of the PEO-based polymer were found to improve and shift to higher wavelengths upon incorporation of CNDs and Ag NPs into the PEO matrix. The SPR peak broadening in the UV-Vis spectra was observed in the PEO:CNDs composites due to the Ag NPs. The absorption edge value of PEO was found to shift toward lower photon energy as the CNDs and Ag NPs are introduced. The photoluminescence (PL) spectra were also observed for the PEO:CNDs and PEO:CNDs:Ag samples and found to be more intense in the PEO:CNDs system than in the PEO:CNDs:Ag system. Lastly, the optical band gap of the samples was further studied in detail using of Tauc's model and optical dielectric loss parameter. The types of electron transition were specified.
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Yu YG, Seo C, Chae CG, Seo HB, Kim MJ, Kang Y, Lee JS. Hydrogen Bonding-Mediated Phase Transition of Polystyrene and Polyhydroxystyrene Bottlebrush Block Copolymers with Polyethylene Glycol. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00678] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yong-Guen Yu
- School of Materials Science and Engineering and Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Chunhee Seo
- Department of Chemistry, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea
| | - Chang-Geun Chae
- School of Materials Science and Engineering and Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Ho-Bin Seo
- School of Materials Science and Engineering and Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Myung-Jin Kim
- School of Materials Science and Engineering and Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Youngjong Kang
- Department of Chemistry, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea
| | - Jae-Suk Lee
- School of Materials Science and Engineering and Grubbs Center for Polymers and Catalysis, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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Karim WNA, Ng JG, Chan CH, Yahya R, Gan SN. POLYMER ELECTROLYTE BLENDS OF MONO-CARBOXYLIC ACID–MODIFIED EPOXIDIZED NATURAL RUBBER AND POLY(ETHYLENEOXIDE). RUBBER CHEMISTRY AND TECHNOLOGY 2018. [DOI: 10.5254/rct.18.83718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
ABSTRACT
Natural rubber with 50% of isoprene units epoxidized (ENR50) was treated with excess of mono-carboxylic acids to completely ring open the epoxide groups. The reaction was carried out by heating ENR50 dissolved in toluene with each of acetic and benzoic acid separately at 105 °C. The ring-opening reaction has produced hydroxyl –OH and ester –O-COR groups, leading to an increase in Tg. The products were characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, thermal gravimetric analysis, and differential scanning calorimetry. By the solution casting method, each of the modified ENR50s was blended with poly(ethylene oxide) (PEO) in various ratios in toluene, and 2% lithium perchlorate (LiCIO4) was added as the dopant. Results show that the modified ENR and PEO formed incompatible blends. The PEO spherulite growth rate in the blends increased with PEO content. The electrical conductivity was found to increase with the weight fraction of PEO in the blend. At the ratio of 25/75, the acetic acid–modified ENR50/PEO blend exhibits a conductivity value of 3.1 × 10−8 S cm−1. The benzoic acid–modified ENR50/PEO achieved conductivity of 5.8 × 10−7 S cm−1 at the ratio of 30/70. These blends form conducting polymer electrolytes with potential application in batteries.
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Affiliation(s)
- Wan Nurhidayah A. Karim
- Department of Chemistry, Faculty Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Jin Guan Ng
- Department of Chemistry, Faculty Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Chin Han Chan
- Faculty of Applied Science, Universiti Teknologi Mara, 40450 Shah Alam, Malaysia
| | - Rosiyah Yahya
- Department of Chemistry, Faculty Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Seng Neon Gan
- Department of Chemistry, Faculty Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Aouak T, Ouladsmane M, Alghamdi AA, Al-Owais AA, Al-Turki TM, Alothman ZA, Saeed WS. Fabrication of tissue engineering scaffold from poly(vinylalcohol-co-ethylene)/poly(D,L-lactic-co-glycolic acid) blend: Miscibility, thermomechanical properties, and morphology. INT J POLYM MATER PO 2016. [DOI: 10.1080/00914037.2015.1129965] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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5
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Chai L, Liu X, Sun X, Li L, Yan S. In situ observation of the melting behaviour of PEO single crystals on a PVPh substrate by AFM. Polym Chem 2016. [DOI: 10.1039/c5py02037a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
PVPh sublayer thickness dependent melting of PEO single crystals.
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Affiliation(s)
- Liguo Chai
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing (100029)
- China
| | - Xiao Liu
- College of Chemistry
- Beijing Normal University
- Beijing (100875)
- China
| | - Xiaoli Sun
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing (100029)
- China
| | - Lin Li
- College of Chemistry
- Beijing Normal University
- Beijing (100875)
- China
| | - Shouke Yan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing (100029)
- China
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Metwalli E, Rasool M, Brunner S, Müller-Buschbaum P. Lithium-Salt-Containing High-Molecular-Weight Polystyrene-block-Polyethylene Oxide Block Copolymer Films. Chemphyschem 2015; 16:2882-2889. [DOI: 10.1002/cphc.201500358] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 06/18/2015] [Indexed: 11/10/2022]
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Wang DR, Wujcik KH, Teran AA, Balsara NP. Conductivity of Block Copolymer Electrolytes Containing Lithium Polysulfides. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b00928] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dunyang Rita Wang
- Department of Materials
Science and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Environmental Energy Technologies Division and ∥Materials Sciences
Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Kevin H. Wujcik
- Department of Materials
Science and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Environmental Energy Technologies Division and ∥Materials Sciences
Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alexander A. Teran
- Department of Materials
Science and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Environmental Energy Technologies Division and ∥Materials Sciences
Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Nitash P. Balsara
- Department of Materials
Science and Engineering and ‡Department of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Environmental Energy Technologies Division and ∥Materials Sciences
Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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Minelli M, Giacinti Baschetti M, Hallinan DT, Balsara NP. Study of gas permeabilities through polystyrene-block-poly(ethylene oxide) copolymers. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2012.12.038] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Ghelichi M, Qazvini NT, Jafari SH, Khonakdar HA, Farajollahi Y, Scheffler C. Conformational, thermal, and ionic conductivity behavior of PEO in PEO/PMMA miscible blend: Investigating the effect of lithium salt. J Appl Polym Sci 2012. [DOI: 10.1002/app.38897] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Affiliation(s)
- Janna K. Maranas
- Department of Chemical Engineering, The Pennsylvania State University
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Aouak T, AlArifi AS, Ouladsmane M. Miscibility and crystallization behavior of poly(ethylene-co-vinylalcohol)/poly(maleic anhydride-alt-ethylene) blend. J Appl Polym Sci 2012. [DOI: 10.1002/app.36470] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhang Y, Li J, Huo H, Jiang S. Effects of lithium perchlorate on poly(ethylene oxide) spherulite morphology and spherulite growth kinetics. J Appl Polym Sci 2011. [DOI: 10.1002/app.34697] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Miranda DF, Russell TP, Watkins JJ. Ordering in Mixtures of a Triblock Copolymer with a Room Temperature Ionic Liquid. Macromolecules 2010. [DOI: 10.1021/ma1015209] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel F. Miranda
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Thomas P. Russell
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - James J. Watkins
- Polymer Science and Engineering Department, University of Massachusetts, Amherst, Massachusetts 01003, United States
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Yen KC, Woo EM, Tashiro K. Amorphous phase and crystalline morphology in blend of two polymorphic polyesters: Poly(hexamethylene terephthalate) and poly(heptamethylene terephthalate). POLYMER 2009. [DOI: 10.1016/j.polymer.2009.10.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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